Clamping device for key-seating machines.



W. J. WINSTON. GLAMPING DEVICE FOR KEY SEATING MACHINES.

APPLICATION FILED APR. 25, 1914.

1 1 2 S Patented Sept. 22, 1914.

WITNESSES: i Q INVENTOR ATTORNEY THE AORRIS PETERS C0 PHU'm-I I'rHn wncumnmu D C LPATENTDFFICE,

; .WILIJIAM steam WINSTON, orsaeriv'nw, MICHIGAN, :nssIGNoR To M ners &

3 MER ILL, or SAGINAW, MICHIGAN, A CORPORATION. y

g ,ct mm mvm ron KEY-SEATING MACHINES.

To all whom/it may concern and State of Michigan, have invented certain new and useful, Improvements. in Clamping Devices J l for} Key-Seating Ma-.

chines; andI dohereby declare the following 'to be a! full, clear, and exact description 1 of the inventiomsuch as will enable others skilled in the artto which it appertains to make and use thesame. s 1 1 l This invention relates tokeyseating or broaching machines and pertains'more particularly to devices for'clamping the work to the work tables of such machines.

' My invention pertains especially to clampingfdevicesbadapted -to be used for ing clamping the worktothe tiltingtable.

' clamping hubs and'similar articles to be key- 'seated,.the hubs being formed with either cylindrical or-tapered bore, and the keyways tobeeitherof uniform depthor tapered, asthenatureofthe work may'requirer one '1 object my invention is f to provide a tilting workfltable with means for adjust- 'ts' amount of inclination and means for A furthereebj ct d r clamping device for the upper end'of thework, the

clampingdevice-being" capable of adjustment longitudinally to suit work ,1 ofgv'arious height, and being also provided with; an

adjustable clamping member ada ted to be adjusted angularly in a vertical plane as well as vertically to 'properly lamp the upperend of work that varies in height orv requires to be held in a tilted position.

a A still further object is "to provide an adjustment by whichthe variationin depth of the keyway from one end to the other may be regulated.

With these and certain other objects in view which will appear later in the s'pecifi v cation, my invention comprises the devices described and claimed and the equivalents thereof. i i

In the drawings, Figure 1 is a side elevation of my work-clamping device applied to the grooved postof a keyseating machine,

a piece of work representinga hub with a tapered bore being shown in cross section between the clamps. Fig. 2 is a top plan.

view'of the parts shown in Fig. 1. Fig. 3 is anend View. ofone of the slides of the Specification of Letters Patent. Patented Sept. 22, 1914. Application'filedApri1 25, 1914. a Serial No. 834,382.

i g' upper clamp. Fig. L is an end View of the Be it (known hat I, WILLIAM JOSEPH3 winsron, a citizen. of the United States,-residing at Saginaw, in the county of Saginaw opposite slide of the same clamp.

As is clearly shownin the drawings, the device consists of a lower stationary collar "lffitte'd over the usual grooved tool post 2 j "of the keyse'ating machine, and 3 Lean upper collar similarly fitted to the'post 2 and vertically slidable thereon, being guidedby a vertical key l carried by the post. To the base of the lower collar 1 'a tiltable work table 5 is secured by .means of trunnions. 6. The inclination of the table controlled by means of a. setscrew 7 threaded intothe {table 5 and having its head resting 'onthe frame or bed 8 of the keyseating machine. When the work is in place on the table, one of its sides bears against the face of the lower collar 1, as a t-9, and the face ofthe work at the opposite diameteris clamped to the work table 5 by means of a lug 10 carried by a suitable slide 11 and adapted to be drawn outward by means of the set screw 12 carried by the table 5. j l

The lower end of any piece of workwithin the capacity of the machine may be clamped 'in the manner illustrated in Fig. '1. To clamp the upperend of the piece of work, theupper collar3 is provided with a bearing me'mber13, adjacent which the upper bore of the work rests while the keyway is being cut. ,To properly clamp the upper end of the piece ofwork at the opposite side from the bearing member 13, and to admit of clamping'taper-boredpieces, a bracket 14; is mounted on the upper collar 3 by means of trunnions 15, and an adjustable slide 16, carrying a clamping lug or member 17 is mounted on "the bracket.:- The .lug is radially ad justable, the adjustment jbeing effected by means of set screw 18 carried by the bracket 1 1;. By properly adjusting the set screw 18, the lug 17. is caused to clamp the work tightly against ,the bearing member 13. Where the work has atapered bore, as shown in Fig. 1, the pivoted bracket 14 is readily adjusted to suit the inclination of the upper face of the work. So far the clamping device has been described in the form adapted for the cutting of a keyway of uniform depth throughout its length.

' I also provide means wherebykeyways of varying depth throughout their lengths may be formed. For example, if it is desired to cut a keyway of less depth at its upper end v i. e. near the bearing member 13, than at its lower endnear the bearing point 9, I adjust the bearing member 13 to a position farther out from the side of the post-2. To provide such radial adjustment of the -bearingmember 13, I prefer to mount on the upper collar 3 a slide 19, the lower part of which forms when closed a part of the upper collar 3, as shown in Fig l. This lower part of the slide 19 comprises the bearing member 13.

To adjust this bearing member, its slide 19 ,is provided with a threaded boss 20, and a' set screw 21 .is threaded into the bossv and bears against the side of the collar 3, so that the set screw when tightened will draw the 1 bearing member 13 to the left in Fig. 1,- thereby causing a shallower keyway tobe the lower formed at the upper end than at end ofthe work;

By the means above described, I have pro- 3 duced a simple, yet powerful" and efl ective clamping device lfor holding the work tothe worktable ofkeyseating and similar ma,- chine's', the clamping device being adapted to hold, work ofvarious diameters of bore, eitherstraight or tapered, and of various heights, and also to hold any of the above 1 classes of work in such a manner that keyways maybe formed in them either of uniform depth or of varying depth throughout their length.

Although I have shown and described my improvement as applied to a vertical key Iclaim and desire to secure by Letters Patcut is: a

1. A work clamping device for keyseating machines and the like, comprisinga post, a 'tiltable work table having an adjustable clamping lug thereon, an adjustable collar slidably mounted on the. post of said machine, a bracket pivoted tosaidfcoll ana clamping member movably mounted on said bracket, and means for moving said-clamping member along said bracket, for the purposes set forth.

2. In a :work-holder for: keyseating machines and the like, the'combination with a a post,'a tiltable table and clamping devices carried thereon, of an adjustable collar carried by the post of said machine, a bracket hinged to said collar, j a clamping memberadjustably mounted on'said bracket, means for adjusting said clamping member, an oppositely located bearing membercarried'by said collar and having means whereby sald with relation to said post.

bearing member may jbevariouslypositioned 3. A work-clamping devlc e forkeyseating machines and the like, comprising a post, a

work table, and means for clampingfwork thereon, an adjustable collar slidably mounts t ed on the post of said machine, a bracket pivoted to said collar, a clamping. member movably mounted on'said bracket, andmeans for moving said clamping member along said bracket. I 1' v 1. In :a.work holder for keyseating machines and the like, the combination with a collar, a post,a tiltable table secured thereto and clamping devices carried onsa'id'table,

of an adjustable collar'j carried 'byvthe post of saidmachine, a bracketjhinged, to said collar, a clamping member jadjustably mounted on said bracket, means for adjusting said clamping membenanoppositely locatedbearing member -carried by one of said collars and having means whereby saidbearing member'may be variously positioned Y with relation to said post. ,7 I

Instestimony whereof, "I signa- 1ture in presence of twowitnesses 1 a 'WILLIAM 'Jos rH iNjsfToN, lVitnesses-z j NELLIE M. ANGUS, j I JOSEPH 'V. CARPENr n.

copies of this patent maybeobtained for five cents each, by aldllresslng the Gomm'lssionero! Patents, i Wa'shingtoinhfi'f, V 

